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Old Nov 30, 2007 | 06:09 PM
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Default tire and wheel sizes

Hello everyone I'm looking to put new tires and wheels on a 68 that I been working on the last three years ! I change my mind many times and here is what I would like to install Torque thrust D with 275 /6015 ! I have a dual mount spring and offset trailing arms ! I don't want them to stick out or rub or add spacers ! The car is one inch higher in the rear! Has any one done this ! Thanks Dan
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Old Nov 30, 2007 | 08:09 PM
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From: plymouth mass
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Here are some TT II's with 255-60-15 tires.
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Old Nov 30, 2007 | 08:17 PM
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You can probably go 275's in the back, but I wouldn't go any bigger than 255's in the front. If you do that, your car will handle a little worse. I went 255/60R15's all the way around on a stock set up.
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Old Nov 30, 2007 | 08:26 PM
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From: Graceland in a Not Correctly Restored Stingray
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Opinion - 275/60's on 8x15's appear to be a bit on the balloon side.

Fact - The wider the tread width is than the rim width at the bead, the less stable the sidewall will be. 245 - 255's are just about optimum for an 8x15. 275's on 8's are not the best way to go.

Question - chuck d, did you have to do spacers?

Notes - If you are required to use spacers () for any caliper interference which you may encounter 1) you'll need longer studs and/or deeper reaching nuts, 2) re-torque your lug nuts regularly, and 3) you're more likely to rub a fender with 275's.

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Old Nov 30, 2007 | 11:36 PM
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Originally Posted by Young69Owner
You can probably go 275's in the back, but I wouldn't go any bigger than 255's in the front. If you do that, your car will handle a little worse. I went 255/60R15's all the way around on a stock set up.

you can go 275 rear allright, BS 4.5'' easy.
front 255 is more then enough, more then that you'd rub when steering.

Data refers to my car but some cars are more equal then others...

(who said that? )
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Old Dec 1, 2007 | 01:09 AM
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From: plymouth mass
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Originally Posted by TheSkunkWorks
Opinion - 275/60's on 8x15's appear to be a bit on the balloon side.

Fact - The wider the tread width is than the rim width at the bead, the less stable the sidewall will be. 245 - 255's are just about optimum for an 8x15. 275's on 8's are not the best way to go.

Question - chuck d, did you have to do spacers?

Notes - If you are required to use spacers () for any caliper interference which you may encounter 1) you'll need longer studs and/or deeper reaching nuts, 2) re-torque your lug nuts regularly, and 3) you're more likely to rub a fender with 275's.

No spacers required for the TT II's. If you use TT D's then I believe you would need spacers to clear the brake calipers.
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